Home / 385,236.08-531,629.16-215,486

Finding the Fourth Proportional to 385,236.08, 531,629.16 and 215,486

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Solution

The fourth proportional to 385,236.08, 531,629.16 and 215,486 is: 297,372.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,236.08 : 531,629.16 = 215,486 : x
  2. Step 2: Convert to fraction form
    385,236.08/531,629.16 = 215,486/x
  3. Step 3: Cross multiply
    385,236.08x = 531,629.16 × 215,486
  4. Step 4: Simplify right side
    385,236.08x = 114,558,641,171.76
  5. Step 5: Solve for x
    x = 114,558,641,171.76/385,236.08
  6. Step 6: Final answer
    x = 297,372.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.